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<html lang="en">
<head>
    <meta charset="UTF-8">
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    <title>Document</title>
    <style>
        *{
            margin: 0;
            padding: 0;
            border: 1px solid red;
        }
        ul{
            list-style: none;
        }
        .fa{
            display: flex;
            justify-content: flex-end;
        }
        ul.fa li{
            /* margin-left: 20px; */
        }
        .hide{
            display: none;
        }
    </style>
    <script>
        
    </script>
</head>
<body>
    <ul class="fa">
        <li>
            
            <a href="#">菜单1</a>
            <ul>
                <li>品论1</li>
                <li>微博2</li>
                <li>@我3</li>
            </ul>
        </li>
        <li> 
            <a href="#">菜单1</a>
        </li>
        <li> 

            <a href="#">菜单1</a>
        </li>
        <li> 

            <a href="#">菜单1</a>
        </li>
    </ul>
</body>
</html>